Carbureter for explosive-engines.



No. 699,504. Patented May 6, 1902..

.1. F. DURYEA.

CARBURETEB FOR EXPLUSIVE ENGINES.

(Application filed Nov. 30., 1900.)

(No Model.)

lTE STATES PATENT ()FFICE.

JAMES FRANK DURYEA, OF SPRINGFIELD, MASSACHUSETTS.

CARBURETER FOR EXPLOSlVE-ENGINES.

SPECIFICATION forming part Of Letters Patent No. 699,504, dated May 6, 1902.

Application filed November 30,1900. Serial No. 38,079. (No model.)

To all whom it may concern.-

Be it known thatI, JAMES FRANK DURYEA, a citizen of the United States of America, and a resident of Springfield, in the county of I-Iampden and State of Massachusetts, have invented certain new and useful Improve- -ments in Carburetors for Explosive-Engines,

of which the following is a full, clear, and exact description.

This invention relates to improvements in carburetors more especially designed for use in conjunction with gasolene engines, and has for its object the production of an apparatus which may be nicely regulated with respect to its capabilities for supplying required proportionate quantities of the liquid fuel and air in vaporized form and which is automatic in respect to themaintenance therein of a uniform quantity of the liquidfuel.

The improved carbureting apparatus consists in the constructions and arrangements or combination of parts hereinafter described in connection with the accompanying drawings and as set forth in the claims.

In the drawings, Figure l is a plan view, and Fig. 2 is a central vertical sectional view.

In the drawings, A represents the tank or font of the carbureteigwhich is shown of a cylindrical form, having a closed bottom and receiving in the screw-threaded top thereof the closing-cap Ct. The walls of the carbureter-tank at opposite sides are thickened or built out, as indicated at b 11 and in the base at the one side through the thickened portion is a horizontal passage d, leading into the tank-chamber and outwardly closed by the removable screw-plug 0. At the opposite side the tank has the horizontal chamber extension d B represents the gasolene-supply pipe, connecting, by a minute opening 0, with the passage d. Above and in line with the said pipe 13 and inlet-duct 6 within the solid or thickened wall of the tank is a vertical socket or hole f, the same leading from the top of the tank to the passage cl, and in this socket f is fitted, for a rising-and-falling play, a rod 9 the lower attenuated extremity g of which constitutes the valve for the gasolene-inlet c.

h represents a lever intermediately pivotally mounted at 72,2 within the tank, one extremity of which has a lifting engagement under the valve-rod g while on the other arm of the nozzle i, having a contracted opening leading from its lower to its upper end. base-wall 7c of the said cylindrical chamber D a horizontal passage 3' is drilled, the same intersecting the vertical passage 'm, which is drilled down through the solid metal between the tank proper and the chamber D. The lower end of the said passage m has communication with the interior of the tank A by reason of its extension beyond the place of intersection with the passage j for connection with the tank-chamber extension d The said passage m being drilled with two diameters, a valve-seat is constituted at n, against Which or adjacent which the lower tapered end of the rod 0 may have its position. The said rod has a portion 0 thereof constructed with a thread engaging in the threaded portion m of the said passage or, so that by turning the rod othe same having a slotted head 0 for facility thereforthe passage of gasolene from the tank-chamber through the passage j and upwardly through the nozzle 4. may be more or less free, as desired.

In the 1) represents a screw-plug for closing the outer end of the passage j.

1' represents a seat or shoulder constituted by a ledge formed in the inner wall of the vertical cylindricalchamber D. Below this ledge or shoulder the casting for the apparatus comprises the lateral hollow hub-like extension or pipe-section E, the opening therethrough being comparatively large, the same, as indicated, having a diameter about the same as that of the said chamber D. Through this conduit E air from the exterior of the carbureter freely enters into the lower portion of the chamber D. Seated on the aforementioned rest or shoulder 1" are the radial arms or wings s s, which are outwardly extended from the axially-vertical ring F. Above this ring F is an eXternally-cylindrical annular shell G, the opening through the lower portion thereof being downwardly flaring, as indicated at t.

The side wall of the chamberD has the vertically-extending opening or slot 71/, through which projects the threaded shank of the screw c, the cylindrical head of which has its location outside of the chamber-inclosing wall, while the threaded shank-screw engages into the tapped socket therefor in the annular shell G.

In the use of the carbureter described the same is combined with a storage or supplytank of gasolene and with the inlet of the cylinder or cylinders of the motor or engine. The connection which the carbureter-tank or service-tank A has with the gasolene-supply is by the pipe B, which may lead from connection with the supply-tank from a location higher than the carbureter, whereby there may be a pressure of the gasolene in an upward direction at or through the passage e. When the ingress of gasolene into the tank A establishes the requisite liquid-level therein, the float O is lifted, relieving the lever h of the weight thereof, so that the valve 9 will automatically close and for the time prevent further ingress of the liquid fuel into the service-tank or main chamber of the carburetor. It being understood that the upper portion of the chamber D has by any suitable conduit or pipe extension connection with the inward valve of the motor, when the motor-piston moves on its suction-stroke, a suction force is created in the upper'part of the chamber D, which has the effect to draw air and gasolene together into the cylinder-chamber, the gasolene coming by way of the nozzle 11 and passage j from the carbureter-tank, while the air comes from the exterior of the apparatus through the airinlet E and passes upwardly as to some part thereof through the opening within the ring F, and as to some part thereof through the spaces between the radial wings s 5. By loosening the screw v, and through it moving the annular shell G vertically, such shell may have its position in contact against or considerably removed from the upper outer edge of the ring F, whereby the passage of air upwardly exteriorly of the ring may be cut off or rendered more or less free, as desired, and the copiousness of the passage of the gasolene through the ductj and upwardly through the nozzle i may be regulated by raising or lowering the screw-provided valve-rod 0.

As will be apparent from an inspection of the drawings accompanying this specification, the apparatus constituting the carbureter consists as to a large portion thereof of a single casting comprising the service-tank and the chamber D to the side thereof, while the ducts, socket, and fittings combined with the casting are such as may be simply and cheaply produced. Moreover, all internal parts which may possibly become clogged are readily accessible by the removal of the screwplugs oandp or therods g or 0 and, if necessary, the nozzle 1 If desired to change the sensitiveness of the float-regulated gasolene ingress, ringshaped weight or weights may be placed on the upper end of the valve-rod g an annular shoulder for the support of such weights being indicated at g in Fig. 2.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

1. In a carbureter, the combination of a mixing-chamber having a longitudinal slot in its side wall, a partition-ring in the chamber having a central axial aperture and also other apertures, an inlet-pipe arranged to discharge hydrocarbon in said central aperture, a movable collar located in the chamber above said ring and arranged to control said other apertures in the partition by its axial movement, said collar being so disposed as to cover said slot in its several positions, and a screw secured to the collar and projecting through the slot, the screw being arranged to adjust the collar from the outside of the carbureter and also to clamp the collar in its positions of adjustment.

2. Ina carbureter, the combination of the chamber, D, having the slot, to; the ring, F, having a central aperture and also the apertures, s; the nozzle, t', arranged to discharge the hydrocarbon in said central aperture; the ring, G, arranged to move axially and thereby control said apertures, s; the ring being so disposed as to cover the slot, u, in its various positions; and the screw, 12, tapped into the ring, G, and projecting through said slot; said screw being arranged to move the ring, G, and to clamp it in its positions of adjustment.

3. In a carbureter, the combination of a mixing chambema partition-ringin the chamber having a central axial aperture and also other apertures, an inlet-pipe for the hydrocarbon arranged with its discharge end located in said central aperture, a movable collar located in the chamber above said ring and arranged to control said other apertures in the partition by its axial movement, said collar having its lower edge tapering upwardly toward its axis, said partition having the part in apposition to said taperingportion of the collar of a corresponding taper, means for moving the collar axially, and means for securing the collar in its positions of adjustment.

4. In a carbureter, the combination of the chamber, D; the ring, F, having a central aperture and also other apertures, s; the nozzle, 71, arranged to discharge hydrocarbon into the central aperture; the ring, G, arranged to move axially and having its lower edge tapering upwardly toward its-axis; the ring, F, having the upper face forming the margins of the apertures, s, of a taper corresponding to the tapering part of the collar, G; means for moving the collar, G, axially; and means for securing the collar in its positions of adjustment.

Signed by me at Springfield, Massachusetts, in presence of two subscribing Witnesses.

. J. FRANK DURYEA.

WVitnesses WM. S. BELLows, O. F. WHITE.

ICC 

